Hitchhiker's Guide to Rukl Chart 73

Described in Rukl as a "ruined crater with central mountain range",
Heraclitus is a strange rectangular structure stretching between
two large craters (Licetus and Heraclitus D). It appears as though
huge twin boulders had slid from one crater to the other, creating
twin furrows, each wider than most normal craters. It's hard to imagine
what natural process actually caused the strange appearance of this crater.
It looks like a gigantic beetle.

Maginus is a useful landmark when trying to locate
Clavius just before sunrise hits it.
Go from Heraclitus due west to find Maginus, a large shallow crater with
several smaller craters in its walls, including a prominent double
crater in the northwest wall. Clavius is the next large crater
southwest of Maginus.

Moretus has a prominent central peak; it's easily mistaken for
Tycho
if you catch it before Tycho is lit. It's fun to watch the shadow of
the peak grow when Moretus is right on the terminator.

Zach (Randy Muller <71172.1234 _at_ compuserve.com>)

Still moving south, the unusually colored crater Zach lay east of
Clavius. There is an odd region of dark material in the NE corner. I
am fairly certain this was not a shadow, but I expect to look at it
again Sunday night. This dark feature, of which there's no hint at
all in Rukl, abutted the NE interior wall. In the SE area of the
crater, there was another, smaller, lighter colored dark spot, which
was oval in shape, and stood out from the wall.

This caught my attention because the terrain in this area seems to be
fairly uniformed light colored highland material. The presence of
dark material made a strong contrast with the rest of the terrain.